•In 1861, Maryland’s House of Delegates voted against seceding from the Union.

•In 1901, Japanese Emperor Hirohito was born in Tokyo.

•In 1916, the Easter Rising in Dublin collapsed as Irish nationalists surrendered to British authorities.

•In 1946, 28 former Japanese officials went on trial in Tokyo as war criminals; seven were sentenced to death.

In 1968, the counterculture musical “Hair” opened on Broadway following limited engagements off-Broadway.

•In 1983, Harold Washington was sworn in as the first black mayor of Chicago.

In 1992, deadly rioting erupted in Los Angeles after a jury in Simi Valley, Calif., acquitted four Los Angeles police officers of almost all state charges in the videotaped beating of Rodney King.

•Ten years ago: Tens of thousands of angry Cuban-Americans marched peacefully through Miami’s Little Havana, protesting the raid in which armed federal agents yanked 6-year-old Elian Gonzalez from the home of relatives.